Multiple receiving device



Feb. 15; '1927.

F. TOEWE MULTIPLE REQEIVING DEVICE Filed July 27, 1925 my #6 mmomzm 7 lv/M w r fi m n .5 e m V 2% .m s

Patented Feb. 15, 1927.

Lens?- UNITED STATES PATENT OFFICE;

FRITZ TOEWE, BERLIN, GERMANY, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A

' I CORPORATION OF NEW YORK.

MULTIPLE RECEIVING Davies;

Application filed l'u-ly 27, 1925, Serial No. 46,273, and in GermanyAugust 1, 1924.

My present invention relates to a multiple receiving device forconnecting several radio head sets or loudspeakers in series.

It is an object of my invention to provide 'a multiple receiving deviceinwhich the pairs of contacts or jacks which are inactive are notnecessarily short circuited.

The novel features which I believe to be characteristic of my inventionare set forth with particularity in the appended claim. My inventionitself, both as to its organization and method of operation will best beunderstood .from the following specification taken in connection withthe accompanying drawing in which Fig.1 shows a View partly in elevationand partly in cross section; Fig. 2 shows a plan view partly brokenaway, and Fig. 3 shows the circuit connections whereby .my invention maybe carried into effect.

. Referring to the drawing, I have shown seven pairs of jacks orcontacts, each of which consist of an inner or upper jack a or a, and anouter or lower jack 6, the

' pairs of jacks-being mounted, on a wooden casing F, which may beconstructed in any manner desired, and disposed on radial lines. Thepairs of jacks-a b are designated by a plate marked To the receiver,while the other pairs of jacks are designated by plates numbered 1-6inclusive. In addition to these pairs of jacks there is provided asingle jack a/f which serves for receiving a connecting plug (1 andwhich has no special t may be placed, if desired, in

line with the other jacks. Jack aof thepair of jacks for connecting themultiple receiver to the source of power is conduc tively connected withthe plug d. Jacks b of the individual pairs of jacks are conductivelyconnected with. the next following jack a, the one of the last pairbeing connected with the jack (1".

If the connecting plug 0 is introduced in; the pair of jacks,

identified by the plate To the receiver the head sets which may beconnected to. pairs 1, 2, 3, for instance, will be connected in seriesfor reception, when the plug (1 is placed in the jack on of the pair ofjacks. If headsets are connected to each pair of jacks, all the headsets will be connected.

in serie's when this the last jack (2".

It is clear that'the upper and lower jacks may be interchanged withrespect to the wiring. Various modifications of my invention willreadily suggest themselves 'to' persons plug d introduced into set forthin pairs of contacts mounted on said casing and,

adapted to cooperate with receiving devices, the contacts of each pairbeing disposed on radial lines, and at diiferent distances from acentral point on the casing to, provide inner and outer contacts, theouter.-

contacts of each pair being electrically connected to the inner contactof an adjacent pair, means for supplying current to one of said pairs ofcontacts, and means connected to one of the contacts of said lastmentioned pair' of contacts and adapted to engage one of thecontacts ofeach pair, whereby an skilled in the artwithout departing from electriccircuit may be selectively completed through a desired number ofreceiving devices.

In witness whereof, I have hereunto set my hand this 6th day of July1925. FRITZTOEWE.

